我正在使用 Swift 3 开发 iOS 应用程序，并尝试按照本教程实施收据验证：http: //savvyapps.com/blog/how-setup-test-auto-renewable-subscription-ios-app。但是，该教程似乎是使用早期版本的 Swift 编写的，所以我不得不进行一些更改。这是我的receiptValidation() 函数：
func receiptValidation() {
let receiptPath = Bundle.main.appStoreReceiptURL?.path
if FileManager.default.fileExists(atPath: receiptPath!){
var receiptData:NSData?
do{
receiptData = try NSData(contentsOf: Bundle.main.appStoreReceiptURL!, options: NSData.ReadingOptions.alwaysMapped)
}
catch{
print("ERROR: " + error.localizedDescription)
}
let receiptString = receiptData?.base64EncodedString(options: NSData.Base64EncodingOptions(rawValue: 0))
let postString = "receipt-data=" + receiptString! + "&password=" + SUBSCRIPTION_SECRET
let storeURL = NSURL(string:"https://sandbox.itunes.apple.com/verifyReceipt")!
let storeRequest = NSMutableURLRequest(url: storeURL as URL)
storeRequest.httpMethod = "POST"
storeRequest.httpBody = postString.data(using: .utf8)
let session = URLSession(configuration:URLSessionConfiguration.default)
let task = session.dataTask(with: storeRequest as URLRequest) { data, response, error in
do{
let jsonResponse:NSDictionary = try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.mutableContainers) as! NSDictionary
let expirationDate:NSDate = self.expirationDateFromResponse(jsonResponse: jsonResponse)!
self.updateIAPExpirationDate(date: expirationDate)
}
catch{
print("ERROR: " + error.localizedDescription)
}
}
task.resume()
}
}
当我尝试调用 expireDateFromResponse() 方法时，问题就出现了。事实证明，传递给此方法的 jsonResponse 仅包含：status = 21002;。我查了一下，它的意思是“receipt-data 属性中的数据格式错误或丢失。” 但是，我正在测试的设备具有该产品的有效沙盒订阅，并且订阅似乎除了这个问题之外可以正常工作。我还需要做些什么来确保正确读取和编码receiptData值，或者其他可能导致此问题的问题吗？
编辑：
我尝试了另一种设置 storeRequest.httpBody 的方法：
func receiptValidation() {
let receiptPath = Bundle.main.appStoreReceiptURL?.path
if FileManager.default.fileExists(atPath: receiptPath!){
var receiptData:NSData?
do{
receiptData = try NSData(contentsOf: Bundle.main.appStoreReceiptURL!, options: NSData.ReadingOptions.alwaysMapped)
}
catch{
print("ERROR: " + error.localizedDescription)
}
let receiptString = receiptData?.base64EncodedString(options: NSData.Base64EncodingOptions(rawValue: 0)) //.URLEncoded
let dict = ["receipt-data":receiptString, "password":SUBSCRIPTION_SECRET] as [String : Any]
var jsonData:Data?
do{
jsonData = try JSONSerialization.data(withJSONObject: dict, options: .prettyPrinted)
}
catch{
print("ERROR: " + error.localizedDescription)
}
let storeURL = NSURL(string:"https://sandbox.itunes.apple.com/verifyReceipt")!
let storeRequest = NSMutableURLRequest(url: storeURL as URL)
storeRequest.httpMethod = "POST"
storeRequest.httpBody = jsonData!
let session = URLSession(configuration:URLSessionConfiguration.default)
let task = session.dataTask(with: storeRequest as URLRequest) { data, response, error in
do{
let jsonResponse:NSDictionary = try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.mutableContainers) as! NSDictionary
let expirationDate:NSDate = self.expirationDateFromResponse(jsonResponse: jsonResponse)!
self.updateIAPExpirationDate(date: expirationDate)
}
catch{
print("ERROR: " + error.localizedDescription)
}
}
task.resume()
}
}
但是，当我使用此代码运行应用程序时，它会在到达 line 时挂起jsonData = try JSONSerialization.data(withJSONObject: dict, options: .prettyPrinted)。它甚至没有到达 catch 块，它只是停止做任何事情。从我在网上看到的情况来看，其他人似乎无法使用 JSONSerialization.data 在 Swift 3 中设置请求 httpBody。